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A vernier thruster or gimbaled engine are particular cases used on launch vehicles where a secondary rocket engine or other high thrust device is used to control the attitude of the rocket, while the primary thrust engine (generally also a rocket engine) is fixed to the rocket and supplies the principal amount of thrust.
RCS thrusters on the nose of Discovery, a Space Shuttle orbiter. The suborbital X-15 and a companion training aero-spacecraft, the NF-104 AST , both intended to travel to an altitude that rendered their aerodynamic control surfaces unusable, established a convention for locations for thrusters on winged vehicles not intended to dock in space ...
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Photo: Reuters. McCandless was the first person to spacewalk untethered on February 7, 1984 wearing only a jetpack — or Manned Maneuvering Unit — later used to retrieve faulty communication ...
The orbiter always landed at either Edwards Air Force Base, California or at the Kennedy Space Center Shuttle Landing Facility, Florida, except STS-3 at the White Sands Space Harbor in New Mexico. Similar special clearances (no-fly zones) were also in effect at potential emergency landing sites, such as in Spain and in West Africa during all ...
The power for the thruster comes from the high pressure gas created during the decomposition reaction that allows a rocket nozzle to speed up the gas to create thrust. The most commonly used monopropellant is hydrazine (N 2 H 4, or H 2 N−NH 2), a compound unstable in the presence of a catalyst and which is also a strong reducing agent.
Solid-propellant rockets or solid-fuel rockets have a motor that uses solid propellants, typically a mix of powdered fuel and oxidizer held together by a polymer binder and molded into the shape of a hollow cylinder. The cylinder is ignited from the inside and burns radially outward, with the resulting expanding gases and aerosols escaping out ...